#438EB8
Closest named color: Cool Blue (#4984B8). oklch(61.7% 0.098 235.9), rgb(67, 142, 184).
Aa
Black text reads best on this color (5.79:1).
About this color
#438EB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.098 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.029 away. Black text reads best on it, at 5.79:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.79:1 |
| White text | 3.62:1 |
Values
| HEX | #438EB8 |
| RGB | rgb(67, 142, 184) |
| HSL | hsl(202, 47%, 49%) |
| OKLCH | oklch(61.7% 0.098 235.9) |
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 #438EB8 | 3.62:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #438EB8 | 5.79:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #438EB8 text on white | 3.62:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #438EB8 text on black | 5.79:1 | AA | Lc -38.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#71A8CA
oklch(70.6% 0.076 236.5)
-
Step 500
500 (this color)
#438EB8
oklch(61.7% 0.098 235.9)
-
Step 600
600
#237CA9
oklch(55.6% 0.106 236)
-
Step 700
700
#136891
oklch(49% 0.099 236.3)
-
Step 800
800
#155575
oklch(42.6% 0.081 235.7)
-
Step 900
900
#1A465F
oklch(37.6% 0.064 237)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#438EB8 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) | #7A8DBA | 0.059 |
| Deuteranopia (no green cones) | #6A81B7 | 0.050 |
| Tritanopia (no blue cones) | #00999C | 0.068 |
| Achromatopsia (no color) | #868686 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438EB8
#438EB8
oklch(61.7% 0.098 235.9)
- #B27548
#B27548
oklch(61.7% 0.098 56.2)
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 #438EB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.029
- Off Blue #5684AE ΔE 0.030
- Blue NCS #118AB2 ΔE 0.032
- Steel Blue #4682B4 ΔE 0.033
- Faded Blue #658CBB ΔE 0.034
- Water Blue #0E87CC ΔE 0.049
- Teal Blue #01889F ΔE 0.054
Use #438EB8 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.