#377993
Closest named color: Cerulean (#457B9D). oklch(54.4% 0.078 226.8), rgb(55, 121, 147).
Aa
White text reads best on this color (4.86:1).
About this color
#377993 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.078 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.022 away. White text reads best on it, at 4.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.31:1 |
| White text | 4.86:1 |
Values
| HEX | #377993 |
| RGB | rgb(55, 121, 147) |
| HSL | hsl(197, 46%, 40%) |
| OKLCH | oklch(54.4% 0.078 226.8) |
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 #377993 | 4.86:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #377993 | 4.31:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #377993 text on white | 4.86:1 | AA | Lc 73.5 | Content text, not long reading |
| #377993 text on black | 4.31:1 | AA large text | Lc -28.2 | 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
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#AAC6D2
oklch(81% 0.035 225.6)
-
Step 400
400
#7BA8BC
oklch(70.6% 0.056 227.2)
-
Step 500
500
#5893AB
oklch(63.2% 0.071 226.1)
-
Step 600
600 (this color)
#377993
oklch(54.4% 0.078 226.8)
-
Step 700
700
#2C6980
oklch(49.1% 0.072 226)
-
Step 800
800
#265668
oklch(42.8% 0.06 225.4)
-
Step 900
900
#244755
oklch(37.8% 0.047 226.2)
-
Step 950
950
#162932
oklch(26.9% 0.03 229.7)
#377993 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) | #6B7794 | 0.058 |
| Deuteranopia (no green cones) | #5E6D93 | 0.052 |
| Tritanopia (no blue cones) | #008181 | 0.049 |
| Achromatopsia (no color) | #717171 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #377993
#377993
oklch(54.4% 0.078 226.8)
- #956148
#956148
oklch(54.3% 0.077 46.3)
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 #377993, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.022
- Ocean #017B92 ΔE 0.024
- Metallic Blue #4F738E ΔE 0.026
- Dull Blue #49759C ΔE 0.027
- Stormy Blue #507B9C ΔE 0.030
- Sea Blue #047495 ΔE 0.031
- Muted Blue #3B719F ΔE 0.035
- Ocean Blue #03719C ΔE 0.042
Use #377993 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.