#438FD4
Closest named color: Dark Sky Blue (#448EE4). oklch(63.3% 0.129 248.6), rgb(67, 143, 212).
Aa
Black text reads best on this color (6.11:1).
About this color
#438FD4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.129 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.025 away. Black text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #438FD4 |
| RGB | rgb(67, 143, 212) |
| HSL | hsl(209, 63%, 55%) |
| OKLCH | oklch(63.3% 0.129 248.6) |
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 #438FD4 | 3.43:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #438FD4 | 6.11:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #438FD4 text on white | 3.43:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #438FD4 text on black | 6.11:1 | AA | Lc -40.1 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A1C5E8
oklch(80.9% 0.063 247.9)
-
Step 400
400
#6DA6DD
oklch(70.8% 0.101 248.6)
-
Step 500
500 (this color)
#438FD4
oklch(63.3% 0.129 248.6)
-
Step 600
600
#1C77C0
oklch(55.6% 0.139 248.5)
-
Step 700
700
#0A64A6
oklch(49.2% 0.129 248.4)
-
Step 800
800
#105287
oklch(42.8% 0.108 248.6)
-
Step 900
900
#17446C
oklch(37.7% 0.084 248.9)
-
Step 950
950
#0F283F
oklch(27% 0.053 248.7)
#438FD4 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) | #7092D7 | 0.047 |
| Deuteranopia (no green cones) | #5C84D3 | 0.035 |
| Tritanopia (no blue cones) | #009FA8 | 0.096 |
| Achromatopsia (no color) | #8A8A8A | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438FD4
#438FD4
oklch(63.3% 0.129 248.6)
- #BC7A1E
#BC7A1E
oklch(63.4% 0.128 69)
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 #438FD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.025
- Water Blue #0E87CC ΔE 0.039
- Chefchaouen Blue #4895EF ΔE 0.042
- Faded Blue #658CBB ΔE 0.046
- Cool Blue #4984B8 ΔE 0.046
- Soft Blue #6488EA ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.053
- Steel Blue #4682B4 ΔE 0.054
Use #438FD4 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.