#233E48
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.7% 0.037 223.7), rgb(35, 62, 72).
Aa
White text reads best on this color (11.32:1).
About this color
#233E48 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.037 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.016 away. White text reads best on it, at 11.32:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.85:1 |
| White text | 11.32:1 |
Values
| HEX | #233E48 |
| RGB | rgb(35, 62, 72) |
| HSL | hsl(196, 35%, 21%) |
| OKLCH | oklch(34.7% 0.037 223.7) |
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 #233E48 | 11.32:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #233E48 | 1.85:1 | Fails | Lc 7.8 | Not readable |
| #233E48 text on white | 11.32:1 | AAA | Lc 96.1 | Preferred for body text |
| #233E48 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
#CFDCE1
oklch(88.6% 0.016 222.7)
-
Step 300
300
#AEC5CE
oklch(80.9% 0.028 223.3)
-
Step 400
400
#83A7B5
oklch(70.7% 0.044 223.6)
-
Step 500
500
#6391A3
oklch(63% 0.057 224.4)
-
Step 600
600
#487B8E
oklch(55.5% 0.062 224)
-
Step 700
700
#396879
oklch(49.1% 0.058 223.6)
-
Step 800
800
#305562
oklch(42.7% 0.047 222.6)
-
Step 900
900 (this color)
#233E48
oklch(34.7% 0.037 223.7)
-
Step 950
950
#1A292F
oklch(27% 0.023 224.8)
#233E48 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) | #383D49 | 0.029 |
| Deuteranopia (no green cones) | #333848 | 0.028 |
| Tritanopia (no blue cones) | #114141 | 0.025 |
| Achromatopsia (no color) | #3A3A3A | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #233E48
#233E48
oklch(34.7% 0.037 223.7)
- #4A332A
#4A332A
oklch(34.5% 0.037 42.3)
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 #233E48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.016
- Onyx #343A40 ΔE 0.026
- Midnight Green #073B4C ΔE 0.028
- Charcoal #264653 ΔE 0.029
- Gunmetal #293241 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.046
Use #233E48 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.