#104055
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.1% 0.062 231.5), rgb(16, 64, 85).
Aa
White text reads best on this color (11.13:1).
About this color
#104055 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.062 and its hue 232°. 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 11.13:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.88:1 |
| White text | 11.13:1 |
Values
| HEX | #104055 |
| RGB | rgb(16, 64, 85) |
| HSL | hsl(198, 68%, 20%) |
| OKLCH | oklch(35.1% 0.062 231.5) |
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 #104055 | 11.13:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #104055 | 1.88:1 | Fails | Lc 8.4 | Not readable |
| #104055 text on white | 11.13:1 | AAA | Lc 95.5 | Preferred for body text |
| #104055 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A3C7DA
oklch(81% 0.047 231.1)
-
Step 400
400
#70A9C7
oklch(70.7% 0.074 232.2)
-
Step 500
500
#4593B9
oklch(63% 0.095 232.2)
-
Step 600
600
#1F7DA5
oklch(55.6% 0.103 232)
-
Step 700
700
#0E698D
oklch(49% 0.096 232)
-
Step 800
800
#125672
oklch(42.7% 0.079 231.2)
-
Step 900
900 (this color)
#104055
oklch(35.1% 0.062 231.5)
-
Step 950
950
#102A36
oklch(27.1% 0.039 230.5)
#104055 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) | #353F56 | 0.040 |
| Deuteranopia (no green cones) | #2C3955 | 0.034 |
| Tritanopia (no blue cones) | #004647 | 0.038 |
| Achromatopsia (no color) | #3B3B3B | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104055
#104055
oklch(35.1% 0.062 231.5)
- #54311B
#54311B
oklch(35.2% 0.061 51.7)
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 #104055, 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
- Midnight Green #073B4C ΔE 0.022
- Charcoal #264653 ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.034
- Prussian Blue #1D3557 ΔE 0.037
- Dark Teal #014D4E ΔE 0.049
- Onyx #343A40 ΔE 0.049
- Marine Blue #01386A ΔE 0.050
Use #104055 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.