#398A7D
Closest named color: Dark Cyan (#008B8B). oklch(58% 0.081 181.1), rgb(57, 138, 125).
Aa
Black text reads best on this color (5.10:1).
About this color
#398A7D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.081 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.027 away. Black text reads best on it, at 5.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #398A7D |
| RGB | rgb(57, 138, 125) |
| HSL | hsl(170, 42%, 38%) |
| OKLCH | oklch(58% 0.081 181.1) |
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 #398A7D | 4.11:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #398A7D | 5.10:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #398A7D text on white | 4.11:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #398A7D text on black | 5.10:1 | AA | Lc -33.6 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A8C9C2
oklch(81% 0.037 181.1)
-
Step 400
400
#77ADA3
oklch(70.7% 0.059 181.7)
-
Step 500
500
#51998C
oklch(63.2% 0.076 180.6)
-
Step 600
600 (this color)
#398A7D
oklch(58% 0.081 181.1)
-
Step 700
700
#226F63
oklch(49.2% 0.076 180.6)
-
Step 800
800
#1F5A51
oklch(42.7% 0.062 181.4)
-
Step 900
900
#204A43
oklch(37.7% 0.049 181.2)
-
Step 950
950
#142B27
oklch(26.9% 0.03 181.4)
#398A7D 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) | #84827D | 0.087 |
| Deuteranopia (no green cones) | #78797E | 0.083 |
| Tritanopia (no blue cones) | #008C86 | 0.023 |
| Achromatopsia (no color) | #7D7D7D | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398A7D
#398A7D
oklch(58% 0.081 181.1)
- #A26577
#A26577
oklch(57.8% 0.082 0.9)
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 #398A7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.027
- Dusty Teal #4C9085 ΔE 0.027
- Teal Green #0A9396 ΔE 0.039
- Teal #008080 ΔE 0.043
- Sea #3C9992 ΔE 0.048
- Viridian #1E9167 ΔE 0.048
- Slate Green #658D6D ΔE 0.049
- Blue Green #0F9B8E ΔE 0.049
Use #398A7D 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.