#23404A
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.3% 0.039 222.2), rgb(35, 64, 74).
Aa
White text reads best on this color (11.03:1).
About this color
#23404A is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.039 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.020 away. White text reads best on it, at 11.03:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.90:1 |
| White text | 11.03:1 |
Values
| HEX | #23404A |
| RGB | rgb(35, 64, 74) |
| HSL | hsl(195, 36%, 21%) |
| OKLCH | oklch(35.3% 0.039 222.2) |
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 #23404A | 11.03:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #23404A | 1.90:1 | Fails | Lc 8.5 | Not readable |
| #23404A text on white | 11.03:1 | AAA | Lc 95.4 | Preferred for body text |
| #23404A text on black | 1.90:1 | 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
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CE
oklch(80.8% 0.029 222.4)
-
Step 400
400
#81A8B6
oklch(70.8% 0.047 221.9)
-
Step 500
500
#6092A4
oklch(63.1% 0.06 222.7)
-
Step 600
600
#457C8F
oklch(55.6% 0.065 222.5)
-
Step 700
700
#366879
oklch(48.9% 0.06 222.4)
-
Step 800
800
#2E5563
oklch(42.7% 0.05 223.4)
-
Step 900
900 (this color)
#23404A
oklch(35.3% 0.039 222.2)
-
Step 950
950
#19292F
oklch(26.9% 0.024 223.4)
#23404A 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) | #3A3F4B | 0.032 |
| Deuteranopia (no green cones) | #343A4A | 0.029 |
| Tritanopia (no blue cones) | #0F4343 | 0.026 |
| Achromatopsia (no color) | #3C3C3C | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23404A
#23404A
oklch(35.3% 0.039 222.2)
- #4D352B
#4D352B
oklch(35.4% 0.039 43.6)
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 #23404A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.020
- Charcoal #264653 ΔE 0.023
- Onyx #343A40 ΔE 0.029
- Midnight Green #073B4C ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.037
- Dark Teal #014D4E ΔE 0.044
- Gunmetal #293241 ΔE 0.045
Use #23404A 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.