#233E47
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.6% 0.036 221.3), rgb(35, 62, 71).
Aa
White text reads best on this color (11.34:1).
About this color
#233E47 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.036 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.018 away. White text reads best on it, at 11.34:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.85:1 |
| White text | 11.34:1 |
Values
| HEX | #233E47 |
| RGB | rgb(35, 62, 71) |
| HSL | hsl(195, 34%, 21%) |
| OKLCH | oklch(34.6% 0.036 221.3) |
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 #233E47 | 11.34:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #233E47 | 1.85:1 | Fails | Lc 7.8 | Not readable |
| #233E47 text on white | 11.34:1 | AAA | Lc 96.1 | Preferred for body text |
| #233E47 text on black | 1.85:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDCE0
oklch(88.6% 0.015 218.1)
-
Step 300
300
#AEC5CD
oklch(80.9% 0.027 220.7)
-
Step 400
400
#83A7B4
oklch(70.6% 0.044 221.9)
-
Step 500
500
#6392A2
oklch(63.2% 0.056 221.3)
-
Step 600
600
#497C8D
oklch(55.7% 0.061 221.4)
-
Step 700
700
#3A6877
oklch(49.1% 0.056 221.1)
-
Step 800
800
#305561
oklch(42.7% 0.047 220.8)
-
Step 900
900 (this color)
#233E47
oklch(34.6% 0.036 221.3)
-
Step 950
950
#1A292E
oklch(27% 0.022 220.6)
#233E47 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) | #393D48 | 0.031 |
| Deuteranopia (no green cones) | #333847 | 0.028 |
| Tritanopia (no blue cones) | #124141 | 0.023 |
| Achromatopsia (no color) | #3A3A3A | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #233E47
#233E47
oklch(34.6% 0.036 221.3)
- #4A332B
#4A332B
oklch(34.5% 0.036 40)
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 #233E47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.018
- Onyx #343A40 ΔE 0.025
- Midnight Green #073B4C ΔE 0.028
- Charcoal #264653 ΔE 0.030
- Gunmetal #293241 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.048
Use #233E47 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.