#438FAB
Closest named color: Dusty Blue (#5A86AD). oklch(61.3% 0.086 225), rgb(67, 143, 171).
Aa
Black text reads best on this color (5.75:1).
About this color
#438FAB is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.086 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.033 away. Black text reads best on it, at 5.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.75:1 |
| White text | 3.64:1 |
Values
| HEX | #438FAB |
| RGB | rgb(67, 143, 171) |
| HSL | hsl(196, 44%, 47%) |
| OKLCH | oklch(61.3% 0.086 225) |
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 #438FAB | 3.64:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #438FAB | 5.75:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #438FAB text on white | 3.64:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #438FAB text on black | 5.75:1 | AA | Lc -37.8 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A5C7D5
oklch(80.9% 0.041 224.8)
-
Step 400
400
#72AAC0
oklch(70.7% 0.067 224.6)
-
Step 500
500 (this color)
#438FAB
oklch(61.3% 0.086 225)
-
Step 600
600
#257E9C
oklch(55.5% 0.093 225.2)
-
Step 700
700
#156A86
oklch(49% 0.087 226)
-
Step 800
800
#16576C
oklch(42.7% 0.071 224.3)
-
Step 900
900
#1B4858
oklch(37.8% 0.056 224.7)
-
Step 950
950
#112A33
oklch(26.9% 0.035 224)
#438FAB 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) | #808CAC | 0.067 |
| Deuteranopia (no green cones) | #7181AB | 0.059 |
| Tritanopia (no blue cones) | #009798 | 0.052 |
| Achromatopsia (no color) | #868686 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438FAB
#438FAB
oklch(61.3% 0.086 225)
- #AF7358
#AF7358
oklch(61.2% 0.086 44.9)
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 #438FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.033
- Blue NCS #118AB2 ΔE 0.034
- Off Blue #5684AE ΔE 0.036
- Cool Blue #4984B8 ΔE 0.042
- Teal Blue #01889F ΔE 0.043
- Steel Blue #4682B4 ΔE 0.044
- Faded Blue #658CBB ΔE 0.045
- Teal Green #0A9396 ΔE 0.048
Use #438FAB 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.