#408398
Closest named color: Cerulean (#457B9D). oklch(57.5% 0.075 221), rgb(64, 131, 152).
Aa
Black text reads best on this color (4.91:1).
About this color
#408398 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.075 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.027 away. Black text reads best on it, at 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #408398 |
| RGB | rgb(64, 131, 152) |
| HSL | hsl(194, 41%, 42%) |
| OKLCH | oklch(57.5% 0.075 221) |
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 #408398 | 4.27:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #408398 | 4.91:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #408398 text on white | 4.27:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #408398 text on black | 4.91:1 | AA | Lc -32.3 | 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
#CCDCE2
oklch(88.4% 0.019 222.2)
-
Step 300
300
#AAC6D0
oklch(80.9% 0.033 221.4)
-
Step 400
400
#7BA9B8
oklch(70.7% 0.054 220)
-
Step 500
500
#5793A7
oklch(63% 0.069 221.4)
-
Step 600
600 (this color)
#408398
oklch(57.5% 0.075 221)
-
Step 700
700
#2C6A7D
oklch(49.2% 0.07 221.1)
-
Step 800
800
#265665
oklch(42.6% 0.057 221.1)
-
Step 900
900
#244752
oklch(37.6% 0.045 220.5)
-
Step 950
950
#162A30
oklch(27.1% 0.028 219)
#408398 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) | #768099 | 0.062 |
| Deuteranopia (no green cones) | #697698 | 0.056 |
| Tritanopia (no blue cones) | #008A8A | 0.045 |
| Achromatopsia (no color) | #7A7A7A | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #408398
#408398
oklch(57.5% 0.075 221)
- #9F6A56
#9F6A56
oklch(57.5% 0.075 41.5)
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 #408398, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.027
- Teal Blue #01889F ΔE 0.028
- Stormy Blue #507B9C ΔE 0.029
- Grey Blue #647D8E ΔE 0.039
- Blue NCS #118AB2 ΔE 0.042
- Off Blue #5684AE ΔE 0.043
- Ocean #017B92 ΔE 0.043
- Dull Blue #49759C ΔE 0.044
Use #408398 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.