#438FDA
Closest named color: Dark Sky Blue (#448EE4). oklch(63.7% 0.136 250.6), rgb(67, 143, 218).
Aa
Black text reads best on this color (6.18:1).
About this color
#438FDA is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.136 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.016 away. Black text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #438FDA |
| RGB | rgb(67, 143, 218) |
| HSL | hsl(210, 67%, 56%) |
| OKLCH | oklch(63.7% 0.136 250.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #438FDA | 3.39:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #438FDA | 6.18:1 | AA | Lc 42.9 | Non-text elements, placeholder text |
| #438FDA text on white | 3.39:1 | AA large text | Lc 61.2 | Content text, not long reading |
| #438FDA text on black | 6.18:1 | AA | Lc -40.5 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DCF1
oklch(88.6% 0.036 249.5)
-
Step 300
300
#A1C4EB
oklch(80.8% 0.067 251.4)
-
Step 400
400
#6CA5E1
oklch(70.7% 0.107 250.7)
-
Step 500
500 (this color)
#438FDA
oklch(63.7% 0.136 250.6)
-
Step 600
600
#1A76C6
oklch(55.7% 0.148 250.5)
-
Step 700
700
#0862AB
oklch(49% 0.138 250.9)
-
Step 800
800
#0E518A
oklch(42.8% 0.113 250.2)
-
Step 900
900
#16436F
oklch(37.6% 0.09 251.1)
-
Step 950
950
#0F2841
oklch(27.1% 0.056 250.6)
#438FDA with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #6D93DD | 0.044 |
| Deuteranopia (no green cones) | #5885D9 | 0.030 |
| Tritanopia (no blue cones) | #00A1AA | 0.104 |
| Achromatopsia (no color) | #8B8B8B | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438FDA
#438FDA
oklch(63.7% 0.136 250.6)
- #BE7A07
#BE7A07
oklch(63.6% 0.136 70.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #438FDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.016
- Chefchaouen Blue #4895EF ΔE 0.034
- Water Blue #0E87CC ΔE 0.043
- Soft Blue #6488EA ΔE 0.045
- Cornflower Blue #6495ED ΔE 0.046
- Faded Blue #658CBB ΔE 0.053
- Cool Blue #4984B8 ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.057
Use #438FDA in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.