#438397
Closest named color: Cerulean (#457B9D). oklch(57.6% 0.072 220.7), rgb(67, 131, 151).
Aa
Black text reads best on this color (4.93:1).
About this color
#438397 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.072 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.028 away. Black text reads best on it, at 4.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #438397 |
| RGB | rgb(67, 131, 151) |
| HSL | hsl(194, 39%, 43%) |
| OKLCH | oklch(57.6% 0.072 220.7) |
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 #438397 | 4.25:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #438397 | 4.93:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #438397 text on white | 4.25:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #438397 text on black | 4.93:1 | AA | Lc -32.4 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#ABC6CF
oklch(80.9% 0.032 219.9)
-
Step 400
400
#7DA9B7
oklch(70.8% 0.051 219.5)
-
Step 500
500
#5993A6
oklch(63.1% 0.067 220.9)
-
Step 600
600 (this color)
#438397
oklch(57.6% 0.072 220.7)
-
Step 700
700
#2E697B
oklch(48.9% 0.067 220.8)
-
Step 800
800
#285664
oklch(42.7% 0.055 220.3)
-
Step 900
900
#254752
oklch(37.7% 0.044 221)
-
Step 950
950
#172A30
oklch(27.1% 0.027 220)
#438397 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) | #778098 | 0.060 |
| Deuteranopia (no green cones) | #6A7797 | 0.053 |
| Tritanopia (no blue cones) | #008A89 | 0.047 |
| Achromatopsia (no color) | #7B7B7B | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438397
#438397
oklch(57.6% 0.072 220.7)
- #9E6B58
#9E6B58
oklch(57.6% 0.072 41.2)
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 #438397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.028
- Stormy Blue #507B9C ΔE 0.029
- Teal Blue #01889F ΔE 0.031
- Grey Blue #647D8E ΔE 0.037
- Off Blue #5684AE ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.044
- Dull Blue #49759C ΔE 0.045
- Blue NCS #118AB2 ΔE 0.045
Use #438397 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.