#387C99
Closest named color: Cerulean (#457B9D). oklch(55.5% 0.082 228.8), rgb(56, 124, 153).
Aa
White text reads best on this color (4.65:1).
About this color
#387C99 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.082 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.014 away. White text reads best on it, at 4.65:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.51:1 |
| White text | 4.65:1 |
Values
| HEX | #387C99 |
| RGB | rgb(56, 124, 153) |
| HSL | hsl(198, 46%, 41%) |
| OKLCH | oklch(55.5% 0.082 228.8) |
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 #387C99 | 4.65:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #387C99 | 4.51:1 | AA | Lc 32.0 | Non-text elements, placeholder text |
| #387C99 text on white | 4.65:1 | AA | Lc 72.1 | Content text, not long reading |
| #387C99 text on black | 4.51:1 | AA | Lc -29.6 | Dividers and decoration only |
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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A9C6D4
oklch(81% 0.037 228.5)
-
Step 400
400
#7AA8BE
oklch(70.7% 0.059 229.1)
-
Step 500
500
#5692AE
oklch(63% 0.075 229.7)
-
Step 600
600 (this color)
#387C99
oklch(55.5% 0.082 228.8)
-
Step 700
700
#2A6983
oklch(49.2% 0.076 228.5)
-
Step 800
800
#24556A
oklch(42.5% 0.063 229)
-
Step 900
900
#234756
oklch(37.8% 0.049 227.3)
-
Step 950
950
#152933
oklch(26.9% 0.032 231.4)
#387C99 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) | #6D7A9A | 0.059 |
| Deuteranopia (no green cones) | #5F7099 | 0.051 |
| Tritanopia (no blue cones) | #008485 | 0.052 |
| Achromatopsia (no color) | #747474 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #387C99
#387C99
oklch(55.5% 0.082 228.8)
- #9A6447
#9A6447
oklch(55.5% 0.082 48.7)
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 #387C99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.014
- Stormy Blue #507B9C ΔE 0.024
- Dull Blue #49759C ΔE 0.026
- Ocean #017B92 ΔE 0.029
- Metallic Blue #4F738E ΔE 0.032
- Muted Blue #3B719F ΔE 0.037
- Teal Blue #01889F ΔE 0.037
- Sea Blue #047495 ΔE 0.038
Use #387C99 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.