#1D404B
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35% 0.045 220.9), rgb(29, 64, 75).
Aa
White text reads best on this color (11.12:1).
About this color
#1D404B is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.045 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 11.12:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.88:1 |
| White text | 11.12:1 |
Values
| HEX | #1D404B |
| RGB | rgb(29, 64, 75) |
| HSL | hsl(194, 44%, 20%) |
| OKLCH | oklch(35% 0.045 220.9) |
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 #1D404B | 11.12:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #1D404B | 1.88:1 | Fails | Lc 8.3 | Not readable |
| #1D404B text on white | 11.12:1 | AAA | Lc 95.6 | Preferred for body text |
| #1D404B text on black | 1.88:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CCDCE2
oklch(88.4% 0.019 222.2)
-
Step 300
300
#AAC6D0
oklch(80.9% 0.033 221.4)
-
Step 400
400
#7BA9B8
oklch(70.7% 0.054 220)
-
Step 500
500
#5893A7
oklch(63.1% 0.068 221.8)
-
Step 600
600
#3B7D92
oklch(55.5% 0.074 221.5)
-
Step 700
700
#2C6A7C
oklch(49.2% 0.069 220)
-
Step 800
800
#265665
oklch(42.6% 0.057 221.1)
-
Step 900
900 (this color)
#1D404B
oklch(35% 0.045 220.9)
-
Step 950
950
#162A30
oklch(27.1% 0.028 219)
#1D404B 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) | #393E4C | 0.037 |
| Deuteranopia (no green cones) | #33394B | 0.034 |
| Tritanopia (no blue cones) | #004443 | 0.029 |
| Achromatopsia (no color) | #3B3B3B | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D404B
#1D404B
oklch(35% 0.045 220.9)
- #4F3328
#4F3328
oklch(35.1% 0.045 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 #1D404B, 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
- Charcoal #264653 ΔE 0.025
- Midnight Green #073B4C ΔE 0.026
- Onyx #343A40 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.035
- Charcoal Grey #3C4142 ΔE 0.043
- Dark Teal #014D4E ΔE 0.043
- Gunmetal #293241 ΔE 0.045
Use #1D404B 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.