#438FD0
Closest named color: Dark Sky Blue (#448EE4). oklch(63.1% 0.124 247.2), rgb(67, 143, 208).
Aa
Black text reads best on this color (6.07:1).
About this color
#438FD0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.124 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.031 away. Black text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.07:1 |
| White text | 3.45:1 |
Values
| HEX | #438FD0 |
| RGB | rgb(67, 143, 208) |
| HSL | hsl(208, 60%, 54%) |
| OKLCH | oklch(63.1% 0.124 247.2) |
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 #438FD0 | 3.45:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #438FD0 | 6.07:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #438FD0 text on white | 3.45:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #438FD0 text on black | 6.07:1 | AA | Lc -39.9 | 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
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEF
oklch(88.5% 0.034 246.8)
-
Step 300
300
#A2C5E6
oklch(80.9% 0.06 247)
-
Step 400
400
#6DA6DA
oklch(70.6% 0.097 247.1)
-
Step 500
500 (this color)
#438FD0
oklch(63.1% 0.124 247.2)
-
Step 600
600
#1D78BD
oklch(55.7% 0.134 247.1)
-
Step 700
700
#0B64A3
oklch(49% 0.126 247.4)
-
Step 800
800
#105284
oklch(42.6% 0.104 247.2)
-
Step 900
900
#17446A
oklch(37.6% 0.081 247.7)
-
Step 950
950
#0F283E
oklch(26.9% 0.052 247.6)
#438FD0 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) | #7291D3 | 0.049 |
| Deuteranopia (no green cones) | #5F84CF | 0.037 |
| Tritanopia (no blue cones) | #009FA6 | 0.094 |
| Achromatopsia (no color) | #8A8A8A | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438FD0
#438FD0
oklch(63.1% 0.124 247.2)
- #BB7927
#BB7927
oklch(63.2% 0.124 67)
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 #438FD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.031
- Water Blue #0E87CC ΔE 0.038
- Faded Blue #658CBB ΔE 0.042
- Cool Blue #4984B8 ΔE 0.042
- Chefchaouen Blue #4895EF ΔE 0.048
- Steel Blue #4682B4 ΔE 0.050
- Off Blue #5684AE ΔE 0.054
- Dusty Blue #5A86AD ΔE 0.054
Use #438FD0 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.