#378398
Closest named color: Teal Blue (#01889F). oklch(57.1% 0.081 219), rgb(55, 131, 152).
Aa
Black text reads best on this color (4.86:1).
About this color
#378398 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.081 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.023 away. Black text reads best on it, at 4.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #378398 |
| RGB | rgb(55, 131, 152) |
| HSL | hsl(193, 47%, 41%) |
| OKLCH | oklch(57.1% 0.081 219) |
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 #378398 | 4.31:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #378398 | 4.86:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #378398 text on white | 4.31:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #378398 text on black | 4.86:1 | AA | Lc -32.0 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A8C7D1
oklch(81% 0.036 219.3)
-
Step 400
400
#77AAB9
oklch(70.7% 0.058 218.1)
-
Step 500
500
#5194A8
oklch(63% 0.074 219.4)
-
Step 600
600 (this color)
#378398
oklch(57.1% 0.081 219)
-
Step 700
700
#236B7D
oklch(49.2% 0.075 217.8)
-
Step 800
800
#205766
oklch(42.7% 0.062 219)
-
Step 900
900
#204853
oklch(37.8% 0.049 218.2)
-
Step 950
950
#142A31
oklch(27% 0.031 220.6)
#378398 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) | #767F99 | 0.069 |
| Deuteranopia (no green cones) | #687598 | 0.062 |
| Tritanopia (no blue cones) | #008A8A | 0.041 |
| Achromatopsia (no color) | #7A7A7A | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378398
#378398
oklch(57.1% 0.081 219)
- #A16754
#A16754
oklch(57.2% 0.081 38.9)
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 #378398, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.023
- Cerulean #457B9D ΔE 0.029
- Stormy Blue #507B9C ΔE 0.033
- Ocean #017B92 ΔE 0.037
- Blue NCS #118AB2 ΔE 0.041
- Dark Cyan #008B8B ΔE 0.042
- Dull Blue #49759C ΔE 0.045
- Grey Blue #647D8E ΔE 0.046
Use #378398 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.