#404457
Closest named color: Dark Grey Blue (#29465B). oklch(39.1% 0.033 275.5), rgb(64, 68, 87).
Aa
White text reads best on this color (9.62:1).
About this color
#404457 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.033 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 9.62:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #404457 |
| RGB | rgb(64, 68, 87) |
| HSL | hsl(230, 15%, 30%) |
| OKLCH | oklch(39.1% 0.033 275.5) |
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 #404457 | 9.62:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #404457 | 2.18:1 | Fails | Lc 11.6 | Not readable |
| #404457 text on white | 9.62:1 | AAA | Lc 92.3 | Preferred for body text |
| #404457 text on black | 2.18:1 | Fails | Lc -10.1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9EF
oklch(93.5% 0.008 278.6)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BCC0D1
oklch(81% 0.024 275.3)
-
Step 400
400
#999FBA
oklch(70.7% 0.04 275.5)
-
Step 500
500
#8087A8
oklch(63% 0.05 275.5)
-
Step 600
600
#6A7194
oklch(55.6% 0.055 275.7)
-
Step 700
700
#585F7E
oklch(49.2% 0.05 274.5)
-
Step 800
800
#484D66
oklch(42.6% 0.042 275.7)
-
Step 900
900 (this color)
#404457
oklch(39.1% 0.033 275.5)
-
Step 950
950
#232631
oklch(27% 0.021 273)
#404457 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) | #3F4658 | 0.006 |
| Deuteranopia (no green cones) | #3D4457 | 0.005 |
| Tritanopia (no blue cones) | #3A474A | 0.029 |
| Achromatopsia (no color) | #454545 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404457
#404457
oklch(39.1% 0.033 275.5)
- #4A4531
#4A4531
oklch(39% 0.032 95.7)
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 #404457, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal Grey #3C4142 ΔE 0.036
- Charcoal #264653 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.047
- Onyx #343A40 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.059
- Dark Teal #014D4E ΔE 0.067
- Deep Teal #00555A ΔE 0.071
Use #404457 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.